Home / 21,830.36-32,778.36-13,104.32

Finding the Fourth Proportional to 21,830.36, 32,778.36 and 13,104.32

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Solution

The fourth proportional to 21,830.36, 32,778.36 and 13,104.32 is: 19,676.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,830.36 : 32,778.36 = 13,104.32 : x
  2. Step 2: Convert to fraction form
    21,830.36/32,778.36 = 13,104.32/x
  3. Step 3: Cross multiply
    21,830.36x = 32,778.36 × 13,104.32
  4. Step 4: Simplify right side
    21,830.36x = 429,538,118.52
  5. Step 5: Solve for x
    x = 429,538,118.52/21,830.36
  6. Step 6: Final answer
    x = 19,676.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.